/* Kadar Labs marketing site. Tokens from the design system (tokens.json v1.1); light only. */
:root {
  --paper: #F6F4EF;
  --paper-raised: #FFFFFF;
  --ink: #16130F;
  --ink-muted: #6B655C;
  --ink-disabled: #A39C90;
  --rule: #DDD8CE;            /* decorative hairlines and dividers */
  --rule-strong: #A39C90;     /* form control borders and UI boundaries, 3:1 against paper */
  --signal: #0F4C5C;
  --signal-hover: #0A3A45;
  --signal-wash: #E4EDEF;
  --signal-wash-rule: #C9E0E3;
  --positive: #1E6F3E;
  --positive-wash: #E6F0E9;
  --negative: #A4352A;
  --negative-wash: #F5E6E3;
  --ramp-1: #0A3A45; --ramp-2: #0F4C5C; --ramp-3: #2E6B76; --ramp-4: #4E8A93; --ramp-5: #6EA8AF;
  --chart-grid: #DDD8CE;
  --chart-axis: #6B655C;
  --shadow-raised: 0 1px 3px rgba(22,19,15,0.06);
  --z-nav: 200; --z-modal: 1000;
  --motion-ui: 150ms cubic-bezier(.4,0,.2,1);
  --display: Fraunces, Georgia, serif;
  --body: Inter, system-ui, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  --radius-sm: 4px;
  --radius-md: 8px;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--paper); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 28px;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--signal); }
a:hover { color: var(--signal-hover); }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }
[hidden] { display: none !important; }
h1, h2, h3, h4, p { text-wrap: pretty; }
p { margin: 0; }
svg { max-width: 100%; }

.wrap { max-width: 1200px; margin: 0 auto; padding-inline: 24px; }
main.wrap { padding-block: 64px 96px; }

/* Type */
.eyebrow, .caption { font-family: var(--body); font-weight: 500; font-size: 13px; line-height: 20px; letter-spacing: 0.02em; color: var(--ink-muted); }
.caption-quiet { font-weight: 400; }
.display, .h1, .h2, .h3 { font-family: var(--display); font-optical-sizing: auto; margin: 0; }
.display { font-weight: 600; font-size: clamp(36px, 4.4vw + 18px, 56px); line-height: 1.07; letter-spacing: -0.02em; }
.h1 { font-weight: 600; font-size: clamp(30px, 3.4vw + 16px, 44px); line-height: 1.14; letter-spacing: -0.02em; }
.h2 { font-weight: 600; font-size: clamp(24px, 2.2vw + 14px, 32px); line-height: 1.25; }
.h3 { font-weight: 500; font-size: clamp(20px, 1.2vw + 15px, 24px); line-height: 1.33; }
.h4 { font-family: var(--body); font-weight: 600; font-size: 19px; line-height: 28px; margin: 0; }
.body-lg { font-size: 19px; line-height: 32px; }
.muted { color: var(--ink-muted); }
.lead { font-size: 19px; line-height: 32px; color: var(--ink-muted); }
.small { font-size: 15px; line-height: 24px; }
.legend { padding: 0 0 4px; font-weight: 600; font-size: 19px; line-height: 28px; }
.mono { font-family: var(--mono); }
.data { font-family: var(--mono); font-weight: 500; font-size: clamp(22px, 1.6vw + 16px, 28px); line-height: 1.21; }
.data-body { font-family: var(--mono); font-weight: 400; font-size: 15px; line-height: 24px; }
.data-sm { font-family: var(--mono); font-weight: 500; font-size: 15px; }
.positive { color: var(--positive); }
.negative { color: var(--negative); }

/* Buttons and links */
.btn { transition: background-color var(--motion-ui), color var(--motion-ui), border-color var(--motion-ui); display: inline-block; font-family: var(--body); font-weight: 500; border-radius: var(--radius-sm); text-decoration: none; cursor: pointer; text-align: center; }
.btn-primary { font-size: 17px; color: #FFFFFF; background: var(--signal); border: 1px solid var(--signal); padding: 12px 22px; }
.btn-primary:hover { color: #FFFFFF; background: var(--signal-hover); border-color: var(--signal-hover); }
.btn-outline { font-size: 15px; color: var(--signal); background: var(--paper-raised); border: 1px solid var(--signal); padding: 8px 16px; }
.btn-outline:hover { background: var(--signal-wash); }
.btn-ghost { font-size: 15px; color: var(--signal); background: transparent; border: 1px solid transparent; padding: 8px 12px; }
.btn-ghost:hover { background: var(--signal-wash); }

/* Nav */
.site-header { position: relative; background: var(--paper); border-bottom: 1px solid var(--rule); }
.site-header .wrap { display: flex; align-items: center; gap: 32px; padding-block: 20px; }
.brand { display: flex; align-items: baseline; gap: 5px; flex: none; text-decoration: none; }
.brand-name { font-family: var(--display); font-weight: 600; font-size: 23px; letter-spacing: -0.02em; color: var(--ink); }
.brand-tag { font-family: var(--body); font-weight: 500; font-size: 15px; color: var(--ink-muted); }
.primary-nav { display: flex; margin-left: auto; align-items: center; gap: 28px; }
.primary-nav a { transition: color var(--motion-ui), border-color var(--motion-ui); font-size: 15px; color: var(--ink); text-decoration: none; padding: 4px 0; border-bottom: 1px solid transparent; }
.primary-nav a:hover { color: var(--signal); }
.primary-nav a[aria-current="page"] { color: var(--signal); border-bottom-color: var(--signal); }
.primary-nav .divider { width: 1px; height: 20px; background: var(--rule); }
.primary-nav .login { color: var(--ink-muted); }
.primary-nav .login:hover { color: var(--ink); }
.primary-nav .btn-primary { font-size: 15px; padding: 9px 18px; border: 0; }
.menu-button { display: none; margin-left: auto; background: none; border: 1px solid var(--rule-strong); border-radius: var(--radius-sm); padding: 8px 12px; font-family: var(--body); font-size: 14px; color: var(--ink); cursor: pointer; }
.menu-overlay { position: fixed; inset: 0; z-index: var(--z-modal); background: var(--paper); display: flex; flex-direction: column; }
.menu-close { display: block; margin-left: 0; }
.menu-overlay-bar { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid var(--rule); }
.menu-overlay-links { display: flex; flex-direction: column; padding: 24px; gap: 4px; }
.menu-overlay-links a { font-family: var(--display); font-weight: 500; font-size: 24px; color: var(--ink); text-decoration: none; padding: 14px 0; border-bottom: 1px solid var(--rule); }
.menu-overlay-links .login { font-family: var(--body); font-size: 17px; color: var(--ink-muted); border-bottom: 0; }
.menu-overlay-links .btn-primary { margin-top: 12px; font-family: var(--body); font-size: 17px; color: #FFFFFF; padding: 14px 18px; border: 0; }
@media (max-width: 720px) {
  .primary-nav { display: none; }
  .menu-button { display: block; }
}

/* Footer */
.site-footer { background: var(--paper); border-top: 1px solid var(--rule); padding: 64px 24px 48px; }
.footer-grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 48px 32px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-brand { gap: 12px; }
.footer-brand .brand-name { font-size: 21px; }
.footer-brand .brand-tag { font-size: 14px; }
.footer-brand p { max-width: 30ch; font-size: 15px; line-height: 24px; color: var(--ink-muted); }
.footer-col a { font-size: 15px; color: var(--ink); text-decoration: none; }
.footer-col a:hover { color: var(--signal); }
.footer-bottom { max-width: 1200px; margin: 48px auto 0; padding-top: 20px; border-top: 1px solid var(--rule); display: flex; flex-wrap: wrap; gap: 8px 24px; }
.footer-bottom .mono { font-family: var(--mono); font-size: 13px; line-height: 20px; color: var(--ink-muted); letter-spacing: 0; }
.footer-bottom .tagline { margin-left: auto; }

/* Calculator */
.calc-hero .eyebrow { margin: 0 0 12px; }
.calc-hero .h1 { max-width: 24ch; margin: 0 0 20px; }
.calc-hero .lead { max-width: 68ch; margin: 0 0 48px; }
.calc-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 48px; align-items: start; }
.calc-form { display: flex; flex-direction: column; gap: 28px; background: var(--paper-raised); border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 28px; min-width: 0; }
.calc-form fieldset { margin: 0; padding: 0; border: 0; min-width: 0; display: flex; flex-direction: column; gap: 24px; }
.calc-form fieldset.loop { gap: 8px; }
.calc-form hr { border: 0; border-top: 1px solid var(--rule); margin: 0; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field-number { gap: 6px; }
.field-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.field label { font-size: 17px; line-height: 28px; }
.field output { font-family: var(--mono); font-weight: 500; font-size: 15px; color: var(--ink); }
input[type=range] { width: 100%; margin: 0; accent-color: var(--signal); height: 32px; }
.input-group { display: flex; align-items: stretch; background: var(--paper-raised); border: 1px solid var(--rule-strong); border-radius: var(--radius-sm); }
.input-group:focus-within { outline: 2px solid var(--signal); outline-offset: 2px; }
.input-group input { flex: 1; min-width: 0; font-family: var(--mono); font-size: 15px; color: var(--ink); background: transparent; border: 0; padding: 10px 12px; }
.input-group input:focus { outline: 0; }
.input-group .unit { display: flex; align-items: center; padding: 0 12px; border-left: 1px solid var(--rule); font-family: var(--mono); font-size: 15px; color: var(--ink-muted); }
.field-note { margin: 4px 0 0; font-size: 15px; line-height: 24px; color: var(--ink-muted); }
.calc-actions { display: flex; flex-wrap: wrap; gap: 12px; padding-top: 4px; }

.calc-results { display: flex; flex-direction: column; gap: 24px; min-width: 0; }
.verdict { background: var(--paper-raised); border: 1px solid var(--rule); border-left: 3px solid var(--positive); border-radius: var(--radius-sm); padding: 20px 24px; }
.verdict[data-state="negative"] { border-left-color: var(--negative); }
.verdict .caption { display: block; }
.verdict .data { display: block; margin-top: 4px; color: var(--positive); }
.verdict[data-state="negative"] .data { color: var(--negative); }
.verdict .body { display: block; margin-top: 6px; font-size: 17px; line-height: 28px; color: var(--ink); }

.chart { margin: 0; background: var(--paper-raised); border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 24px; min-width: 0; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart figcaption { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--rule); }

.summary { padding: 16px 20px; background: var(--paper-raised); border: 1px solid var(--rule); border-radius: var(--radius-sm); font-size: 15px; line-height: 24px; color: var(--ink); }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 0; background: var(--paper-raised); border: 1px solid var(--rule); border-radius: var(--radius-md); overflow: hidden; }
.stat { padding: 20px; border-left: 1px solid var(--rule); border-top: 1px solid var(--rule); margin: -1px 0 0 -1px; }
.stat span { display: block; }
.stat .data { margin-top: 4px; }

.loop-panel { background: var(--signal-wash); border: 1px solid var(--signal-wash-rule); border-radius: var(--radius-md); padding: 24px; }
.loop-panel .caption { display: block; color: var(--signal); }
.loop-figures { display: flex; flex-wrap: wrap; gap: 32px; margin-top: 12px; }
.loop-figures span { display: block; }
.loop-figures .data { color: var(--signal); }
.loop-panel p { margin: 16px 0 0; max-width: 60ch; font-size: 17px; line-height: 28px; color: var(--ink); }

.cta-band { margin-top: 96px; padding-top: 32px; border-top: 1px solid var(--rule); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; }
.cta-band p { max-width: 62ch; font-size: 19px; line-height: 32px; }
.cta-band .btn { flex: none; }

.noscript { margin: 0 0 24px; padding: 16px 20px; background: var(--paper-raised); border: 1px solid var(--rule); border-left: 3px solid var(--negative); border-radius: var(--radius-sm); font-size: 15px; line-height: 24px; }

/* Page header (Method, Pricing, Legal) */
.page-header { max-width: 62ch; margin-bottom: 64px; }
.page-header .eyebrow { margin: 0 0 12px; }
.page-header .h1 { margin: 0 0 20px; }

/* Home */
.hero { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 64px 48px; align-items: center; padding-block: 96px 64px; }
.hero .display { max-width: 22ch; margin: 0 0 24px; }
.hero .lead { max-width: 60ch; margin: 0 0 32px; }
.hero-actions, .actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero figure, .figure-plain { margin: 0; min-width: 0; }
.figure-plain svg { display: block; width: 100%; height: auto; overflow: visible; }
.figure-plain figcaption, .figure-card figcaption { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--rule); }
.figure-card { margin: 32px 0 0; background: var(--paper-raised); border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 24px; min-width: 0; }
.figure-card svg { display: block; width: 100%; height: auto; overflow: visible; }
.band { border-top: 1px solid var(--rule); }
.band-raised { background: var(--paper-raised); }
.band .wrap { padding-block: 96px; }
.band .eyebrow { margin: 0 0 12px; }
.band .h2 { max-width: 30ch; margin: 0 0 48px; }
.band .h2.tight { margin-bottom: 24px; }
.band .h2.mid { margin-bottom: 32px; }
.loop-steps { display: flex; flex-wrap: wrap; align-items: stretch; gap: 16px; margin-bottom: 32px; }
.loop-step { flex: 1 1 240px; background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 24px; }
.loop-step .n { display: block; font-family: var(--mono); font-size: 13px; line-height: 20px; color: var(--ink-muted); }
.loop-step .h3 { margin: 6px 0 0; }
.loop-arrow { flex: none; display: flex; align-items: center; color: var(--ink-muted); }
.loop-arrow svg { display: block; }
.band .claim { max-width: 68ch; margin: 0 0 48px; }
.compare { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; border: 1px solid var(--rule); border-radius: var(--radius-md); overflow: hidden; background: var(--paper-raised); }
.compare-cell { padding: 24px; border-bottom: 1px solid var(--rule); }
.compare-cell + .compare-cell { border-left: 1px solid var(--rule); background: var(--paper); }
.compare-cell span { display: block; }
.compare-cell .data { margin-top: 6px; }
.compare-cell .small { margin-top: 4px; color: var(--ink-muted); }
.compare-note { grid-column: 1 / -1; padding: 12px 24px; font-family: var(--mono); font-size: 13px; line-height: 20px; color: var(--ink-muted); }
@media (max-width: 640px) { .compare { grid-template-columns: minmax(0, 1fr); } .compare-cell + .compare-cell { border-left: 0; } }
.answers { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 32px; }
.answer { padding-top: 20px; border-top: 1px solid var(--rule); }
.answer .n { display: block; margin-bottom: 8px; font-family: var(--mono); font-size: 13px; line-height: 20px; color: var(--ink-muted); }
.answer .h4 { margin: 0 0 8px; }
.answer p { color: var(--ink-muted); }
.genres { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 24px; }
.genre { min-width: 0; }
.genre svg { display: block; width: 100%; height: auto; }
.genre-label { margin-top: 10px; padding-top: 8px; border-top: 1px solid var(--rule); font-weight: 600; font-size: 17px; line-height: 28px; }
.legend-row { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: 24px; padding-top: 12px; border-top: 1px solid var(--rule); }
.legend-keys { display: flex; flex-wrap: wrap; gap: 16px; }
.legend-key { display: flex; align-items: center; gap: 6px; }
.legend-key .swatch { width: 16px; height: 2px; }
.legend-key .swatch.dashed { background: repeating-linear-gradient(90deg, currentColor 0 4px, transparent 4px 7px); }
.legend-key .mono { font-family: var(--mono); }
.limits { max-width: 68ch; display: flex; flex-direction: column; gap: 16px; }
.cta-close { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 32px; }
.cta-close .h2 { max-width: 26ch; margin: 0; }

/* Article layout (Method, Legal) */
.article-layout { display: flex; flex-wrap: wrap; gap: 64px 48px; align-items: flex-start; }
.toc { flex: 0 1 220px; position: sticky; top: 24px; }
.toc .caption { margin: 0 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--rule); }
.toc nav { display: flex; flex-direction: column; gap: 8px; }
.toc a { display: flex; gap: 10px; font-size: 15px; line-height: 24px; color: var(--ink); text-decoration: none; transition: color var(--motion-ui); }
.toc a:hover { color: var(--signal); }
.toc a .n { flex: none; font-family: var(--mono); font-size: 13px; color: var(--ink-muted); }
.article { flex: 1 1 520px; max-width: 62ch; min-width: 0; }
.article section { margin-bottom: 64px; }
.article section:last-child { margin-bottom: 0; }
.article .h2 { margin: 0 0 20px; }
.article .h3 { margin: 0 0 12px; }
.article p.body-lg { margin: 0 0 20px; }
.article p.body-lg:last-child { margin-bottom: 0; }
.article p.body-lg.gap { margin-bottom: 24px; }
.formula { margin: 0 0 12px; padding: 20px 24px; background: var(--paper-raised); border: 1px solid var(--rule); border-radius: var(--radius-md); overflow-x: auto; font-family: var(--mono); font-size: 15px; line-height: 24px; white-space: nowrap; }
.formula-note { margin: 0 0 20px; }
.inline-math { font-family: var(--mono); font-size: 17px; }
.panels { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 24px; }
.panel { min-width: 0; }
.panel svg { display: block; width: 100%; height: auto; }
.panel-meta { margin-top: 10px; padding-top: 8px; border-top: 1px solid var(--rule); }
.panel-meta .label { font-weight: 600; font-size: 17px; line-height: 28px; }
.panel-meta .note { font-family: var(--mono); font-size: 15px; line-height: 24px; }
.article .actions { margin-top: 32px; padding-top: 32px; border-top: 1px solid var(--rule); }
.note-box { background: var(--paper-raised); border: 1px solid var(--rule); border-left: 3px solid var(--ink-muted); border-radius: var(--radius-sm); padding: 16px 20px; }
.note-box.warn { border-left-color: var(--negative); }
.note-box p { font-size: 17px; line-height: 28px; }
.detail-list { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 0; border-top: 1px solid var(--rule); }
.detail-list dt { padding: 12px 24px 12px 0; border-bottom: 1px solid var(--rule); font-weight: 500; font-size: 13px; line-height: 24px; letter-spacing: 0.02em; color: var(--ink-muted); }
.detail-list dd { margin: 0; padding: 12px 0; border-bottom: 1px solid var(--rule); font-family: var(--mono); font-size: 15px; line-height: 24px; overflow-wrap: anywhere; }
.placeholder { color: var(--negative); }
.outline { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--rule); }
.outline li { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--rule); }
.outline .n { flex: none; width: 32px; font-family: var(--mono); font-size: 15px; line-height: 28px; color: var(--ink-muted); }
.outline .title { display: block; font-weight: 600; font-size: 19px; line-height: 28px; }
.outline .note { display: block; font-size: 17px; line-height: 28px; color: var(--ink-muted); }
.article-sub { margin: 0 0 24px; }
.article .h2.sub-tight { margin-bottom: 8px; }

/* Pricing */
.tiers { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; margin-bottom: 64px; }
.tier { display: flex; flex-direction: column; background: var(--paper-raised); border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 28px; }
.tier.featured { border-color: var(--signal); }
.tier .h3 { margin: 0 0 4px; }
.tier .price { font-family: var(--mono); font-weight: 500; font-size: 28px; line-height: 34px; }
.tier .unit { margin-bottom: 20px; }
.tier .blurb { margin: 0 0 20px; padding-top: 20px; border-top: 1px solid var(--rule); color: var(--ink-muted); }
.tier.featured .blurb { border-top-color: var(--signal); }
.tier ul { margin: 0 0 28px; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.tier li { display: flex; gap: 10px; }
.tier li .dash { flex: none; font-family: var(--mono); font-size: 15px; color: var(--ink-muted); }
.tier .btn { margin-top: auto; }
.section-rule { margin-bottom: 64px; padding-top: 32px; border-top: 1px solid var(--rule); }
.section-rule:last-child { margin-bottom: 0; }
.section-rule .h2 { margin: 0 0 32px; }
.common { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 32px; }
.common-item { padding-top: 20px; border-top: 1px solid var(--rule); }
.common-item .h4 { margin: 0 0 8px; }
.common-item p { color: var(--ink-muted); }
.fineprint { margin: 32px 0 0; max-width: 68ch; color: var(--ink-muted); }
.faq { max-width: 68ch; display: flex; flex-direction: column; }
.faq-item { padding: 24px 0; border-top: 1px solid var(--rule); }
.faq-item .h3 { margin: 0 0 8px; }

/* Figure motion (Home hero). Disabled under reduced motion. */
@keyframes kadar-draw { from { stroke-dashoffset: 2400; } to { stroke-dashoffset: 0; } }
@keyframes kadar-fade { from { opacity: 0; } to { opacity: 1; } }
[data-draw] { stroke-dasharray: 2400; animation: kadar-draw 600ms cubic-bezier(.22,.61,.36,1) forwards; }
[data-fade] { opacity: 0; animation: kadar-fade 300ms 600ms linear forwards; }
@media (prefers-reduced-motion: reduce) {
  [data-draw] { stroke-dasharray: none; animation: none; }
  [data-fade] { opacity: 1; animation: none; }
  .btn, .primary-nav a, .toc a { transition: none; }
}
.btn-outline-lg { font-size: 17px; padding: 12px 22px; }
.legend-key .swatch-1 { background: var(--ramp-2); }
.legend-key .swatch-2 { background: var(--ramp-4); }
.legend-key .swatch-3 { background: var(--ramp-5); }
.note-gap { margin-bottom: 32px; }